Photoacoustic method and apparatus for measuring intensity of el

Photodetector amplitude linearity

Photodetector and spectrometer using the same

Photodiode array

Photodiode array spectrometer

Photodiode array spectrometer

Photoelectric measuring apparatus for use in automatic analyzer

Photoelectric measuring system with integrated optical circuit i

Photoelectric position encoder using diffraction imagery

Photoelectric position indicator with a light-directing phase gr

Photoelectric position measuring system

Photoelectric position measuring system with integral optical ci

Photoelectric position-measuring arrangement having a plurality

Photometric absorption detector

Photometric readhead with light-shaping plate

Photon-sorting spectroscopic microscope system

Photonic integrated circuit based planar wavelength meter

Photonic-based sensors and methods for detecting analytes

Photorefractive crystal interferometric device for measuring an

Photosensitive diodes for simplified optical heterodyning and ca